This equipment system is a special gas supply and distribution box designed for the supply of dangerous gases such as flammable, explosive, corrosive, and toxic. The inlet is connected to the main pipeline, and the outlet is connected to each machine. Its basic functions include manual purging and Safety cut off of each branch in case of emergency. It adopts PLC control and the touch screen is the human-machine interface. Through the pressure sensors, pneumatic valves and other devices installed on the equipment, the safe and effective operation of the equipment is achieved. The program includes various safety protection chain and alarm functions to achieve safe and continuous operation of equipment and the safety protection of personnel and equipment. The system is equipped with operation passwords and recording operation alarms to achieve full recording of the process.